Harrison MR3eq

A 500 Module Claiming the Harrison Signature

The MR3EQ follows the tradition of Harrison equalizers, renowned for their ability to shape a signal both precisely and pleasingly to the ear. The "proportional" approach (a Q that adapts to the extent of the correction) is particularly appreciated in studios: it allows you to move from subtle tweaks to more pronounced interventions while maintaining a musical result. In 500 format, the MR3EQ easily integrates into an existing rack and offers a high-end solution to add character, clean up a spectrum, or highlight a source without complicating the audio chain.

A Studio Equalizer to Sculpt, Clean, and Bring Out a Source

Designed for mono processing (1 channel), the MR3EQ is an excellent choice if you're looking for a "workhorse" equalizer capable of covering a wide range of situations: refining a vocal, thickening a snare drum, opening overheads, controlling the low end of a bass or guitar, or clarifying a synth. In recording, it helps place a sound in the right spot from the start; in mixing, it becomes a quick tool to correct problematic areas and enhance useful zones. Since it is an analog processing unit, you benefit from a latency-free process and immediate response, ideal both for tracking and processing via a digital audio workstation return through an interface.

A Versatile EQ: Curves, Q, and Filtering Designed for Musicality

Highs: from shelf to bell, depending on intent

The high-frequency band is based on a shelf curve (6 dB/octave), particularly effective for adding air, brilliance, or a sense of openness. When you need a more targeted action, it can be switched to a 2nd order bell with Harrison's famous proportional Q behavior: the equalization gains precision without becoming harsh, facilitating useful boosts and clean cuts, even on already dense sources.

Mids: the "mix" zone with continuously variable Q

The mid band is at the heart of a mix's balance: intelligibility of a voice, attack of a guitar, presence of a piano, projection of a snare drum. On the MR3EQ, the mid frequency is continuously adjustable and relies on Q management adapted for studio use: you can find the masking zone and then correct precisely, or conversely highlight a harmonic signature without giving the impression of a "surgical" treatment.

Lows and High-Pass Filter: weight, but clean

The low-frequency band in shelf (6 dB/octave) is ideal for controlling the foundation: attenuating excess sub-bass, solidifying a fundamental, or lightening a track that clutters the low end of the spectrum. To go further in cleaning, the MR3EQ offers a separate high-pass filter section, accompanied by a distinctive resonance peak (announced at 3 dB in the description). This approach is very useful for clearing the low end without losing all the sense of body: you remove unnecessary energy while maintaining a feeling of punch and presence.

Finally, the boost/cut range of +/- 10 dB offers a comfortable amplitude: wide enough for strong sculpting if needed, while remaining perfectly usable for fine and repeatable tweaks. The peak LED completes the package to secure your levels, especially when combining EQ and gain in a 500 chain.

Technical specifications